Apparatus for making lampblack.



No. 688,2!5. Patented Dec. 3, i90l.

G.'WEGELIN.

APPARATUS FOR MAKING LAMPBLAGK.

(Application filed July 23, 1901.)

(No Model.)

Minute;

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FFICE.

ATENT KALSOHEUREN, GERMANY.

APPARATUS FOR MAKING LAMPBLACK.

SPECIFICATION forming part of Letters Patent No, 688,215, dated December3, 1901.

Application filed July 23,1901. Serial No. 691389. (No model.)

To all whom it may concern.-

Be it known that I, GOTTFRIED WEGELIN, of Kalscheuren, Kingdom ofPrussia, Germany, have invented certain new and useful ImprovementsinApparatus for Manufacture of Lampblack; and Ido hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

Heretofore in the manufacture of lampblack from tar more or less Wastehas occurred by reason of the conversion of the tar into coke andconsiderable time and heat have been required in evolving the heavy oilsand anthracene.

By my present invention the surface of the tar is disturbed byapractically constant supply of fresh tar, and the air which is forcedup through the tar to aid in evolving the heavy oils, &c., is heatedbefore entering the body of the tar, preferably by being passed throughthe combustion-chamber.

The invention will be hereinafter fully set forth, and particularlypointed out in the claims.

In the accompanying drawings, Figurel is a vertical longitudinalsectional view show-- ing a preferred form of embodiment of myinvention. Fig. 2 is a horizontal sectional View.

Referring to the drawings, 1 designates a tank, to which the tar iscontinuously supplied by a pipe 1, the flow in which may be regulated bya valve l A pipe 2, which is passed through combustion-chamber 3,connects tank 1, to a vessel 4, wherein the tar is burned, such pipeopening into the vessel just below the normal level of the tar therein.The level of the tar in vessel 4 is thus constantly the same as in tank1, in which it is maintained constant by an overflow-pipe 5. By thedescribed means the tar is supplied to vessel 4 at about the level ofthe liquid therein, thereby in practice keeping the level agitated andpreventing the formation of coke. By heating the tar while in transit tothe vessel where it is to be inflamed it is readily freed of. itsvolatile materials. The vessel at at its upper end opens into thecombustion-chamber, so that the smoke arising from the inflamed liquidwill pass thereinto and the lampblack will be deposited in chambers (notshown) provided for that purpose.

Heated compressed air is supplied to the tar within vessel 4 through apipe 6, leading from a suitable compressor (not shown) and extendingthroughout a portion of its length within the combustion-chamber,terminating in two perforated tubes 7 within the vessel. This air-pipebeing passed through the combustion chamber the air conveyedtherethrough will be thoroughly heated before being discharged into theliquid tar, and by rea son thereof the air will quicklyand thoroughlymix with the fumes before ignition and facilitate evolving the last ofthe heavy oils and anthracene.

In the bottom of vessel 4 is a cock 8, through which pitch may be drawnas the gases are evolved. The quality of the pitch maybe reg ulated byopening this cool; a greater or lesser extent, the same depending on thequantity of the evolved fumes. The less the cock is opened the longerthe tar is heated or burned and more fumes evolved, and in consequencethe harder is the pitch.

The advantages of my'invention are apparent to those skilled in the art.

I claim as my invention- 1. In combination, in an apparatus for themanufacture of lampblack, a combustion" chamber, ahydrocarbon-liquid-containing vessel opening thereinto, means forautomatically supplying such liquid to such vessel, and means forsupplying preheated air to said vessel beneath the surface of the liquidtherein, as set forth. 7

2. In combination, in an apparatus for the manufacture of lampblack, acombustionchamber, a hydrocarbon-1iquid-containing vessel openingthereinto, a supply-pipe for the liquid leading through thecombustionchamber and opening into the vessel at a point near the normalsurface of the liquid therein, a pipe for conveying air under pressureinto such liquid beneath the surface thereof, and means for heating theair before its discharge into the vessel, as set forth.

3. In combination, in an apparatus for the manufacture of lampblack, acombustionchamber, a hydrocarbon-liquid-containing vessel, a supply-pipefor the liquid opening into such vessel at a point near the normalsurface of the liquid therein, a pipe for conveying air under pressureinto such liquid beneath the surface thereof, said pipe being carriedthrough the combustion-chamber a portion of its length; as set forth.

4. In combination, in an apparatus for the manufacture of lampblack, acombustionchamber, a tar-containing vessel, a supplytank, a pipe leadingfrom the latter through the combustion-chamber and opening into thevessel beneath the surface of the liquid therein, an overflow in saidtank located in line with the normal level of the liquid in such

